64477404 has 48 divisors (see below), whose sum is σ = 167856640. Its totient is φ = 21403440.

The previous prime is 64477403. The next prime is 64477423. The reversal of 64477404 is 40477446.

64477404 = T₁₉₁ + T₁₉₂ + ... + T₇₃₂.

64477404 is a `hidden beast` number, since 644 + 7 + 7 + 4 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64477403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28167 + ... + 30369.

Almost surely, 2^64477404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64477404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83928320).

64477404 is an abundant number, since it is smaller than the sum of its proper divisors (103379236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64477404 is a wasteful number, since it uses less digits than its factorization.

64477404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487 (or 2479 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The square root of 64477404 is about 8029.7823133632. The cubic root of 64477404 is about 400.9921288331.

The spelling of 64477404 in words is "sixty-four million, four hundred seventy-seven thousand, four hundred four".